Thanks for the rapid reply !

I think you misunderstood my meaning about modules / C compiler - probably I phrased it badly.

My users don't install their own modules. I install modules for people to use - so they know nothing about minicpan / cpan - they know that their scripts work. If I send a script to Bob and this script uses the Win32::SerialPort module, this module must be installed where Perl itself is.

To install this module, a C compiler is required - only I use the compiler, once per module, to install it. CPAN.pm uses the compiler because the compilation is part of the module's Make process.